Vigilantly lying on the cat's eye of the security door and looking out, there were no zombies in Chen Dong's line of sight, and it was quiet outside. Someone in the attic turned into a zombie, someone was at home before, so the security door was not locked from the outside, Chen Dong just twisted the doorknob, and easily pushed the door open a crack.

Looking at the stairs outside through the gap, there were also no zombies, Chen Dong slowly pushed open the door and walked out.

Walking gently to the staircase, Chen Dong waved the steel gun, just like the last time he went to the next unit, he slammed the steel gun in his hand into the stair handrail, the handrail of the staircase was hollow, the metal collided, and the knocking sound was extremely loud.

The moment the knocking sound sounded, the roar of zombies could be heard downstairs, accompanied by the sound of hurried footsteps.

There were zombies in the stairway downstairs, and he was attracted by the knocking sound, Chen Dong immediately stopped knocking, stared closely at the corner of the stairs, and waited for the arrival of the zombies.

The footsteps sounded a little heavy, but it was not messy, Chen Dong analyzed rationally, listening to the footsteps, there should be only one zombie running up, there is no need to be afraid of it at all!

It was like to confirm Chen Dong's guess, but eight or nine seconds later, a young zombie in a black suit rushed up.

When Chen Dong saw the zombie appear, he immediately threw out the glass in his hand, and the glass smashed on the steps in the middle of the stairs below, making a crisp popping sound. The zombie who rushed to the corner of the stairs was obviously stagnant, and his speed did not decrease, but he did not rush towards Chen Dong, but pounced on the place where the cup exploded.

The cup was deliberately thrown by Chen Dong, which can be regarded as an experiment he did.

Chen Dong's goal was achieved, and the zombies who rushed up were attracted by the sound of the cup shattering, which confirmed the speculation in his heart. Zombies may have other ways to sense information from the outside world, which Chen Dong does not rule out, but judging from the current situation, at least the main way for zombies to judge information is done through hearing, and moreover, zombies will obviously stubbornly lock on to the last sound source as the target, and other sources of occurrence are the second choice.

The zombie lay on the steps and groped for a while, and it took a second or two to react, it raised its head, as if it consciously wanted to look at the staircase, however, the moment it raised its head, the sharp tip of the steel gun had already stabbed head-on, quickly inserting into his eye socket.

The zombie howled, and Chen Dong stirred the handle of the steel gun vigorously until the zombie stopped struggling and lay motionless on the ground.

Following the intuition, the trajectory of each shot seems to be deduced from the bottom of the heart, and it seems that the moment the tip of the gun is pierced, the final result is already doomed.

Chen Dong suddenly had a strong self-confidence in his heart, the two zombies he destroyed in a row made him feel a sense of accomplishment, thinking about killing zombies on the fifth floor at noon, he had to plan in every possible way. But he never thought that after he took the first step in fighting zombies head-on on the fifth floor, it was only a few hours later, and now killing zombies is as simple as killing chickens and chopping vegetables.

Of course, being able to kill zombies so easily is mainly due to intuition that improves the hit rate, and Chen Dong now seems to have discovered an Achilles heel of zombies, that is, the way zombies judge information through hearing is easily disturbed, such zombies are not difficult to deal with at all, and they can be killed with one move.

Chen Dong was even a little optimistic, although there were many zombies, they were not difficult to kill, as long as the survivors who escaped the catastrophe were smarter, they would definitely be able to kill zombies like Chen Dong.

At least for now, it may not be too difficult to eliminate zombies in the future......

After carefully searching all the pockets and belt buckles of the zombies, Chen Dong did not find the car keys, but he found a string of keys on the security door. After checking the key, Chen Dong took the key and walked towards the anti-theft door of the resident opposite the attic, inserted the key into the lock hole and twisted it to try, but he couldn't open the anti-theft door at all, it seems that this set of keys is not the attic resident's.

If you can find a bunch of keys, it means that you will definitely be able to open the anti-theft door of a certain household, although I don't know if you can find the car key in that household's house, but for Chen Dong, who can only use brute force to destroy the door lock and search for the key from door to door, he can open an anti-theft door, and he can also exclude a household.

In addition to taking the key to try door to door, Chen Dong had no other way, from the nine-story attic all the way down to the sixth floor, Chen Dong found that there were zombies knocking on the door of a household on the seventh floor, Chen Dong failed to open the security door of any household, it seems that he has to continue to look down.

However, when Chen Dong walked to the fifth floor, he had just gone down to this floor, and suddenly found that the door of a resident on the fifth floor was open.

The security door of this household was only half open, Chen Dong suddenly raised his vigilance when he saw it, put the key in his pocket, he picked up the steel gun, and walked towards this household with light steps.

Pulling open the door, Chen Dong held the hammer handle with his right hand and knocked on the security door twice with the hammer. A loud voice sounded, Chen Dong stood at the door and looked inside the door, and there was no unusual reaction from this household.

There should be no zombies, Chen Dong's preliminary judgment concluded. Since the door of this resident is open, Chen Dong does not intend to waste the opportunity, he wants to go in and have a look, and the car key may not be in the house of this resident.

I don't know if the security door of the unit downstairs is open, in order to prevent zombies from suddenly breaking in, Chen Dong took the door after entering the house on the fifth floor.

When the anti-theft door is closed, the door lock is automatically locked, and this lock cannot be opened on the outside, but on the inside, it can be pushed open by just twisting the doorknob, so that even if there is an emergency, Chen Dong will not have much trouble when he leaves.

Vigilantly slowing down, Chen Dong slowly walked into the living room of this resident, the bedroom doors were open, and Chen Dong walked to the bedroom. This time, Chen Dong put a lot of weight on his steps, and every step he took, he also used the steel bar in his hand to slam the ground heavily.

He couldn't see the situation in the bedroom, Chen Dong was still a little worried, the reason why he used a steel gun to pestle the ground was also here, if there were zombies in the bedroom, he believed that the sound of the steel gun pestle in his hand would attract the zombies.

There was no reaction in the bedroom, and Chen Dong was about to walk to the door of the bedroom, however, just as Chen Dong was about to relax his vigilance, a heavy impact suddenly sounded from his side.

Chen Dong Huo Ran turned around, beside him was the kitchen with the door closed, the door was trembling at the moment, and the continuous impact sound resounded behind the door.

Zombies in the kitchen?

Chen Dong listened carefully, but there was no zombie cry behind the door, and when he listened carefully, there seemed to be a series of "ho-ho" sounds, which sounded extremely strange.

Isn't it a zombie? What is it that can make such a sound?

The kitchen door was still vibrating strongly, and Chen Dong couldn't help but take a step back.

Generally, the security doors in the homes of residents are open outward, and the doors of the bedrooms or kitchens at home are opened inward, and the indoor doors are generally wooden, which will not be as strong as the security doors.

The door of the kitchen of this resident is no exception, it is also wooden, and it is not difficult for Chen Dong to see that the door of the kitchen should be made of plywood of poor quality.

The contents of the kitchen kept banging on the door, the wooden door had begun to deform, and the white latex paint painted on the door had begun to burst and peel off.

Chen Dong already had the initial confidence to kill zombies, but the things in the kitchen were a little weird, and he didn't know what it was, so Chen Dong couldn't help but start to retreat in his heart. Exit this household, close the security door again, no matter how fierce the monster in the kitchen is, it shouldn't be able to break the security door.

Thinking so, Chen Dong decided whether to advance or retreat, but at this moment, a screeching sound suddenly came from the kitchen door. Chen Dong had been staring at the security door, but when he saw something coming out of the door, he suddenly became timid.

What came out was a small blade, which looked like a kitchen knife, although kitchen knives were very common, but Chen Dong was shocked, things in the kitchen actually used knives! The blade that came out quickly retracted, but then the blade appeared on the security door again.

The blade began to retract and emerge again, Chen Dong was shocked, what was behind the door, he would actually use a knife to cut the door!

Is it a living person? Or maybe it's a xenomorph zombie?!

The kitchen knife was embedded in the door again, and then the blade was pulled back, and the same position on the door had been slashed several times, this time, perhaps because the angle of the kitchen knife was tilted, as the kitchen knife was violently pulled back, a hole was forced out of the wooden door.

Behind the door, half an ugly face was pasted on the door, Chen Dong could see clearly, it was a zombie's face, and he even saw the zombie's eyeballs exposed at the entrance of the cave. Almost instinctively, Chen Dong held the steel gun with both hands, stepped forward, and stabbed the eyeball exposed behind the small hole with a shot.

Chen Dong's gun felt a sense of frustration, but at the same time that the tip of the gun was completely pierced, Chen Dong suddenly felt no more force.

The zombie behind the door retreated or had already fallen, and after stabbing out the steel gun, the force from behind did not act on the zombie.

Timely retracted his strength, Chen Dong took back the steel gun, and a chaotic collision sound sounded in the kitchen, but he still didn't hear the howl of the zombies, but the strange sound of "ho ho" was more intensive.

Looking at the kitchen door, Chen Dong did not retreat, he held the steel gun in both hands, and looked at the door vigilantly, until there was no sound in the kitchen, he tentatively knocked on the door with the steel gun.

There was no sound of collision behind the door, and even the strange "ho-ho" sound had stopped. Although Chen Dong felt that the follow-up force of the stabbing gun did not fully play a role, the explosive power of his early stabbing gun was also extremely powerful, and the eye protection of the human body was very fragile, Chen Dong did not dare to guess the effect of that shot, but he estimated that it should not be a problem for that shot to cause damage to the zombie's brain.

Using a steel gun to flick the doorknob, Chen Dong stood as far away as possible and pushed the door open with the tip of the gun. The contents of the kitchen were in full view, and a long-haired female zombie was half-lying on the ground, her body convulsed, and she was holding a kitchen knife in her hand.

The female zombie is half-lying, to be precise, it is a corpse half-leaning on the ground, and there are large patches of dried blood sprinkled around the corpse, and in the hand of the corpse, there is also a bloodstained short-handled watermelon knife.

The kitchen was filled with the stench of decay, presumably caused by the high level of decomposition of the corpse lying on the floor. Chen Dong held back his strong nausea, covered his mouth and nose and looked at it from a distance, through his clothes, he could find that the corpse lying on the ground should also be a woman.

The female zombie killed by Chen Dong had its chin drooping on its neck, multiple wounds on its cheeks and face, and its chin had been cut off, and the murder weapon that caused this injury should be the short-handled watermelon knife in the corpse's hand.

No wonder the zombies in the kitchen don't howl, they can only make simple "ho-ho" syllables, it turns out that her face has been severely injured, which has affected her ability to speak. It seemed that this was just an ordinary zombie that had been injured, Chen Dong shook his head helplessly, he was even startled by the zombie's cry just now.

Chen Dong deliberately raised his eyes and glanced at the stove again, and on the cutting board of the stove, there were indeed vegetables that had not been cut, and the vegetables were seriously rotten, and he could no longer recognize what the dishes were.

When Chen Dong saw the kitchen knife in the zombie's hand, he guessed that the female zombie should be chopping vegetables before the mutation. The uncut dish actually corroborates Chen Dong's previous guess, normal people should have saved their last thoughts before mutating into zombies, otherwise the zombies' hands would not still be holding kitchen knives.

Chen Dong didn't know what was going on in this kitchen, but he was sure and sure that when the female zombie was infected and mutated into a zombie, it must have attacked another woman, and the other woman must have chosen to fight back, and cut its face with a watermelon knife.

The knife in the hand of the zombie will not cut his face, it does not have that IQ, this, Chen Dong is very sure, in addition to the knife in the hand of the zombie, it can only be that the knife in the hand of the female corpse can cause damage to her.

The corpse of the female corpse on the ground looks very complete, presumably because she cut off the zombie's jaw when she was alive, so that the zombie could not bite and eat, so that she protected her body.

The smell of corpses was too strong, Chen Dong understood the situation in the kitchen, so he quickly closed the door, the female zombie was still lying on the ground and convulsed, Chen Dong couldn't stand the smell of the corpse, and didn't go in to kill the female zombie completely.

As long as the female zombie is incapacitated and can't hurt herself, if it weren't for Chen Dong not howling in order to determine why the zombies in the kitchen use knives, he wouldn't even open the kitchen door.